I think maybe the condesor motor is going bad, while a/c is on sometimes it spins for just a few seconds and shuts back off if I tap the top of the shroud it stays on, Sometimes it jerks all over trying to kick in? A/C is blowing hot air, and when motor is working it will blow cold. Yesterday in 90+ weather it blew really hot. Is it a switch or a/c condenser motor? I only have enough money to fix one part at this time. Thanks.